A new light on your dashboard? You don’t figure out why it doesn’t switch off… It’s typical, an auto is elaborate and there are various motives why a light may occur. If it turns out your glow plug light comes on while driving your Volkswagen New Beetle, it might suggest several things. In this post, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Volkswagen New Beetle functions, and then the different motives it lights up when you are driving

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What is the role of my Volkswagen New Beetle glow plug light?

The main role of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to ensure that your glow plugs are working properly. In fact, it must light up when you switch on your Volkswagen New Beetle to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not meant to stay or come on while driving with your motor vehicle. Nevertheless, if it turns on while driving, it may suggest different troubles, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Volkswagen New Beetle?

A glow light that comes on while driving on your Volkswagen New Beetle or at any other time other than when the engine is started is designed to notify you to a problem other than your spark plugs, we will look at this now. In any case, a switch to the diagnostic tool will allow you to carefully understand the cause for the light up of your glow light.

My Volkswagen New Beetle glow light comes on and I’m going through a loss of power

The first probability is that you perceive that your glow plug light comes on while driving your Volkswagen New Beetle and that you also knowledge a loss of power. In such a case, several complications can explain its presence. Here is a list of the main motives:

  • Problem of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this case, it is obvious that your preheat light comes on while driving on Volkswagen New Beetle because it is one of the problem of which it is designed to warn you. Have the status of your valve tested
  • Trouble linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can lead to turbo boost and a disturbance in the performance of the turbo.
  • Trouble related to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that affect its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Volkswagen New Beetle coupled with a loss of power, is that your fuel filter is too dirty, you should come to feel jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my Volkswagen New Beetle

Finally, we’ll give you the motives for a glow plug light that comes on on your Volkswagen New Beetle without you feeling any difference in power or motor vehicle behaviour. Ordinarily, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, test and replace if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to fix the issue.
  • You have a false contact somewhere in your electrical circuit, check the other options first because it is not easy to find it alone, we advise you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • If perhaps you have any further questions about the Volkswagen New Beetle, do not hesitate to consult our Volkswagen New Beetle category.